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4 October, 08:47

An angle measures 7/9pi radians. What is the degree measure of the angle?

A. 140°

B. 280°

C. 439.6°

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Answers (1)
  1. 4 October, 09:43
    0
    2pirad=360 deg

    so

    xrad/2pi=ydeg/360

    times both sides by 360 to solve for ydeg

    180xrad/pi=ydeg

    so

    7/9pi rad

    180 (7/9pi) / pi=ydeg

    140=ydeg

    140 deg

    A is answer
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